[ Vocabulary & Grammar ]
. Which of the following describes “air pollution”?
A. Clear and fresh air
B. Harmful substances in the atmosphere
C. A type of weather phenomenon
D. A method of farming

Random Topics:
Pre-intermediatePresent Simple and ContinuousRoot WordPersonal PronounPast Progressive TenseFuture Tenses and ModalsStative Verbs and TensesFigurative LanguageNoun Verb AgreementIdentify The TensesOther quiz:
Prepositions › ViewShe thinks she will run ___ four hours.
A. to
B. on
C. for
D. go
Grammar › View
My grandma’s house
A. Sentence
B. Fragment